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The dark one were the special BBW, there is a lot written, search Salm Coticule, La Lorraine, Rouge Du Salm and French stones, for even mores mystery and good pics.

Check the “BBW” side, it may have been harvested for the blue rock and may be a special stone.

There is so much of the Old Rock/ coticule history that is unknown, in the end it was a business and...